Home / 66,143.52-91,357.20-48,209.76

Finding the Fourth Proportional to 66,143.52, 91,357.20 and 48,209.76

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Solution

The fourth proportional to 66,143.52, 91,357.20 and 48,209.76 is: 66,587.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,143.52 : 91,357.20 = 48,209.76 : x
  2. Step 2: Convert to fraction form
    66,143.52/91,357.20 = 48,209.76/x
  3. Step 3: Cross multiply
    66,143.52x = 91,357.20 × 48,209.76
  4. Step 4: Simplify right side
    66,143.52x = 4,404,308,686.27
  5. Step 5: Solve for x
    x = 4,404,308,686.27/66,143.52
  6. Step 6: Final answer
    x = 66,587.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.